C.F. Franco Ethiopien 0-6-0 Locomotives in Ethiopia

Class Details by Steve Llanso of Sweat House Media

Class 51 (Locobase 9976)

Data from JP Crozet's Franco-Ethiopian Railway site, [], last accessed 28 November 2011.

The first four of these little tanks (works numbers 40-43) were named Djbouti, Harrar, El Bah, & Seine (the last might reflect nostalgia on the part of the French owners of this railway). These arrived in 1899. Eleven years later, 4 more made the journey, but these apparently were not named.

The heating surface given in the diagram allows no surface area for the firebox if the outer dimension of the fire tubes is used to calculate tube heating surface. If the inner diameter of 35 mm was used in the calculation, which may have been so, then the firebox heating surface came to 5.1-5.35 sq m (55-58 sq ft ).

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID9976
RailroadC.F. Franco Ethiopien
Number in Class8
Road Numbers51-58
Gauge95 cm
Number Built8
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.56 / 2
Engine Wheelbase (ft / m) 6.56 / 2
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 6.56 / 2
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)55,116 / 25,000
Engine Weight (lbs / kg)55,116 / 25,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)55,116 / 25,000
Tender Water Capacity (gals / ML)792 / 3
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.90 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33.50 / 850
Boiler Pressure (psi / kPa)200.20 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)12.6" x 16.54" / 320x420
Tractive Effort (lbs / kg)13,339 / 6050.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.13
Heating Ability
Tubes (number - dia) (in / mm)146 - 1.378" / 35
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.20 / 2.50
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 7.97 / 0.74
Evaporative Heating Surface (sq ft / m2)490 / 45.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)490 / 45.50
Evaporative Heating Surface/Cylinder Volume205.28
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1596
Same as above plus superheater percentage1596
Same as above but substitute firebox area for grate area
Power L1
Power MT

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